#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
int main()
{
	float n = 0, m = 0;
	while (scanf("%f %f", &n, &m) != EOF)
	{
		m /= 100;
		float a = n / (m * m);
		if (a < 18.5)
		{
			printf("Underweight\n");
		}
		else if (a >= 18.5 && a <= 23.9)
		{
			printf("Normal\n");
		}
		else if (a > 23.9 && a <= 27.9)
		{
			printf("Overweight\n");
		}
		else
		{
			printf("Obese");
		}
	}
	return 0;
}